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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,629 companies indexed · Last updated: today
DirectoryIndustryElectrical IndustryDiessenhofenWenger + Wirz AG
Wenger + Wirz AG Logo
Verified· 4 sourcesTrust Score
Summary

About the company

Wenger + Wirz AG is an electrical and telematics company offering electrical installations, building technology, photovoltaics, e-mobility, ZEV systems, and services including maintenance, planning and security systems.

AI-generated
Offering

Products & services

Industry:Electrical Industry
✓ Offered8
Electrical installations
Power and low-voltage installations for residential, commercial and industrial buildings; lighting and power installations, network systems, fire alarm systems, emergency lighting, security systems and multimedia.
Telematics
Internet telephony VoIP, conventional telephone systems, remote maintenance and remote support, as well as telecommunications, LAN, WLAN and VPN networks, cloud solutions and Microsoft 365.
Building services
Building automation and intelligent networking for residential and commercial buildings; smart home with Loxone or KNX, industrial networking with WAGO and KNX, visualisations and remote access.
E-mobility
Charging infrastructure and charging stations for home, at the workplace or in public parking spaces; including consulting, planning, permits, installation, programming and maintenance.
ZEV self-consumption systems
Self-consumption association with consulting, planning, site verifications, metering devices, electrical installations, programming, cloud connections, billing and maintenance.
Service & maintenance
Fault finding, устранление des defects, repairs, maintenance and upkeep for electrical systems, including needs-based maintenance contracts.
Planning & consulting
Analysis, consulting, concept and strategy, cost estimate, tendering, detailed planning, specialist site supervision, cost control and as-built documentation.
Inspections & safety
Periodic, independent and final inspections, thermography for maintenance, expert reports, safety certificates, network analyses as well as device testing and occupational safety.
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4.2/5

Wenger + Wirz AG

Trust & reputation

ranQ Trust Score of Wenger + Wirz AG: 4.2 out of 5.0

Trust Score4.2/ 5.0

Very high

x

Data basis 100% · As of October 2026

Wenger + Wirz AG scores 76.3 out of 100 points in the Reputation area of the ranQ Trust Score. This area carries 42% of the weighting.
x
CriterionValueWeight
  • Review quality: The average rating across all connected sources, smoothed against the industry mean. So 5.0 stars from three reviews do not outrank 4.7 from three hundred.72.324%
  • Review volume: The number of reviews across all sources. The scale is logarithmic: the first reviews count the most, and the maximum is reached at 50 reviews.84.710%
  • Review recency: The age of the most recent review. Two-year-old reviews deliberately sit in the middle, because that is normal for Swiss SMEs. Only after three years without a new voice does the value drop markedly.78.08%
Wenger + Wirz AG scores 80.4 out of 100 points in the Substance area of the ranQ Trust Score. This area carries 28% of the weighting.
x
CriterionValueWeight
  • Establishment: Years since founding or brand launch, logarithmic. The maximum is reached at 15 years.100.012%
  • Company size: The headcount band, researched by ranQ or stated by the company. It is scored in steps rather than by head count, because the data only provides bands.55.07%
Wenger + Wirz AG scores 85.0 out of 100 points in the Identity area of the ranQ Trust Score. This area carries 22% of the weighting.
x
CriterionValueWeight
  • Verification: Official register entry (commercial register with UID or professional-body record, 55 points), confirmed domain (20 points) and confirmed ranQ profile (up to 25 points, depending on completeness).85.022%
Wenger + Wirz AG scores 38.6 out of 100 points in the Visibility area of the ranQ Trust Score. This area carries 8% of the weighting.
x
CriterionValueWeight
  • Website authority: Ahrefs' Domain Rating measures, on a scale of 0 to 100, how strongly a website is linked from other websites. For Swiss SMEs the range up to 40 is typical; the maximum is reached at 35.77.14%
  • Media authority: Quality and number of editorial mentions, weighted by the importance of the source, plus the recency of the latest high-quality mention.0.04%
Qualifications+0.00

Wenger + Wirz AG reaches a ranQ Trust Score of 4.2 out of 5.0 — rated «Very high». The rating draws, among other things, on 4.5 out of 5 stars from 27 customer reviews. As of October 2026.

The Trust Score cannot be bought and is calculated from publicly verifiable data.

Reviews

Aggregated rating

Aggregated rating
4.5
of 5

Aggregated from 27 reviews across all connected sources

Sources
GGoogle4.527
★TrustpilotSoon
PProvenExpertSoon

Further sources are added continuously and factored into the ranQ Rating.

Press

Media

November 28, 2023Media
R. Graf & Co. AG fusioniert mit der Wenger + Wirz AG
schaffhausen24.ch

Knowledge

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Location

Hier entsteht die Karte
8253 Diessenhofen
Opening hours
Mon
07:15 - 12:00, 13:30 - 17:00
Tue
07:15 - 12:00, 13:30 - 17:00
Wed
07:15 - 12:00, 13:30 - 17:00
Thu
07:15 - 12:00, 13:30 - 17:00
Fri
07:15 - 12:00, 13:30 - 17:00
Sat
Closed
Sun
Closed

At a glance

Legal form
Branch
UID
CHE-368.511.491
Founded
1990 · 36 years
Last commercial register change
March 9, 2012
Employees
1 to 10
Legal form: Graded by liability and disclosure. The weight is kept small: a sole proprietorship is not a dubious company, it is just liable differently.
76.0
6%
  • Branch offices: Branch offices linked in the commercial register. Having none is normal and costs no points.70.03%
    • Full methodology

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